[The Fifth Horseman] Wacky Funsters
 

I played this game in the early or mid 90's on DOS. Graphics was probably VGA.
It's an action/puzzle game, and has really weird humour throughout.
Story starts by a geeky kid wearing glasses being sucked into his computer, transported to another world.
He meets the king of this world, and it turns out he has to compete in different sports to save the kingdom.
Can't remember much of the levels, but there is one scene where there are two muscly brothers on a beach who are on steroids, and after defeating them they turn half horse.
The other game you have to play is a weird version of pong. When your opponent hits the ball you can hear 'PONG' quite loudly (I think when you hit it, someone says 'PING').

Sounds like Wacky Funsters:
http://www.abandonia.com/en/games/95...To+Gaming.html

That's the one!!!
Thanks a lot, you're the best!